If you are using theme_get_settings, such as: $value = trim(theme_get_setting('my_setting')); Then in your code editor you will also be seeing undefined  function 'theme_get_setting'.  This function has been deprecated for some time.   Instead, you need to use Passing the theme.manager and theme.initialization services to theme_handler constructor as optional parameters is deprecated. These parameters are also mandatory. $theme_handler = \Drupal::service('theme_handler');Get...

iOS localization on the fly If you have added languages to your app... shortly afterwards you'll be getting yourself knee deep in changing the language on the fly.  Followed by the question – how do you change the language of the app without having to restart the app?  To change the language of the app there are a couple of key steps involved: Adding / managing languages Managing the app bundle By the way I have added to GitHub a demo app - switch languages showing how...